US3773307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air humidifying unit
Assignee: Svenska Flaktfabriken AB
•
Filing: 1971-04-19
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Granted: 1973-11-20
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Expires: 1991-04-19
Abstract
Abstract Air humidifying unit of circulation water type, having an air humidifier arranged over a basin for collection of the circulation water, part of said water being continuously tapped off to limit the content of salts and impurities in the water, said basin having a spillway furnished with water-trap to prevent air communication with the environment, the tapped water being led off through the water-trap of the spillway, whereby this water-trap serves also as outlet for the tapped water.
Inventors
- 👤 T Karlsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:09
CPC Classifications
B; B01; B01J; B01J4/00; B01J4/001; F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; Y; Y10; Y10S; Y10S261/00; Y10S261/46
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
153 words
In an air humidifying unit of the circulating water type including a humidifier housing, a basin underlying said humidifier housing adapted to supply water to the humidifier, an overflow spillway means in said basin having a funnel opening above which the water level in the basin cannot rise, and a drainage pipe connected to said spillway means, the improvement wherein the unit includes a collection tray positioned in the bottom of said humidifier housing and extending outwardly therefrom above said basin for collecting at least a portion of the water in said humidifier housing, said collection tray including a discharge port means to discharge the collected water directly into said funnel means, said unit including a water trap connected between said spillway funnel and said drainage pipe which provides a column of water to accommodate the pressure differential between the humidifying unit and the drainage pipe and to block direct air communication therebetween.
Claim 2
Dependent Claim
153 words
In an air humidifying unit of the circulating water type including a humidifier housing, a basin underlying said humidifier housing adapted to supply water to the humidifier, an overflow spillway means in said basin having a funnel opening above which the water level in the basin cannot rise, and a drainage pipe connected to said spillway means, the improvement wherein the unit includes a collection tray positioned in the bottom of said humidifier housing and extending outwardly therefrom above said basin for collecting at least a portion of the water in said humidifier housing, said collection tray including a discharge port means to discharge the collected water directly into said funnel means, said unit including a water trap connected between said spillway funnel and said drainage pipe which provides a column of water to accommodate the pressure differential between the humidifying unit and the drainage pipe and to block direct air communication therebetween.
Claim 3
Dependent Claim
44 words
An air humidifying unit according to claim 1 wherein said collection tray extends along a limited portion of the humidifier housing bottom and said discharge port comprises a drain opening extending from the bottom of said collection tray in vertical alignment with the funnel.
Claim 4
Dependent Claim
37 words
An air humidifying unit according to claim 2 wherein said drain opening is sufficiently large to discharge all of the water collected in said tray and prevent accumulation of salty water therein and clogging of the opening.
Claim 5
Dependent Claim
67 words
An air humidifying unit according to claim 1 wherein said water trap comprises a chamber open at one end to said funnel and open at the other end to said discharge pipe, and two transverse partitions spaced apart in said chamber, the partition closest to said funnel having an opening at the bottom and the partition closest to said discharge pipe having an opening at the top.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |